hello im new here and i have a 96 mark viii with cams and exhaust. it currently has a 4r70w but i'd like to swap in a t-45. my question is if anyone has done this sorta swap? and what exactly i will need i.e. parts and will i need to flash my ecm to switch to standard instead of auto. im kinda lost i have the general idea of parts just not particulars to bring it all together so any input would b greatly appreciated.